Read the passage from the essay "War Stories: A Bosnian-American Retraces Her Father’s Footsteps.”The more American my father became, the easier it was to forget that I was Bosnian. When I was little, he still held Old World sensibilities, distinctly Bosnian mannerisms and a heavy accent. I was well into elementary school when English began to dominate our conversations, both in public and at home.The Bosnian language slowly faded from us both. When I was in college I noticed that my father’s accent was gone.When I tried to conjure up a sentence in Bosnian after years of neglecting it, I could not. Suddenly, years of words, stories and jokes I had grown up with were gone, swept away to the inner corners of my mind where memories go to die.Which challenge experienced by Bosnian refugees does this passage describe?